YC Spring 2026 (P26) founder

Szymon Rybczak

Founder of TesterArmy, Test your app with AI, catch bugs before users do

Company

Szymon Rybczak is listed as a founder of TesterArmy. TesterArmy is an AI agent that tests websites and mobile apps. It monitors production on a schedule and runs automatically on every GitHub Pull Request, delivering screenshots, recordings, and actionable bug reports. Describe tests in plain English. The agent handles login flows, OAuth, and OTPs, no scripts to write or maintain. We catch the regressions and UX issues that code review misses.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. X

    one of our first full-time hires was a designer, because taste and design quality matter more than ever it's easy to build things now, b...

    one of our first full-time hires was a designer, because taste and design quality matter more than ever it's easy to build things now, but designing them so they feel clean, get recognized and stick in people's heads is the hard part, and it's even harder in devtools where your...

  2. X

    even LinkedIn employees don’t use LinkedIn for outreach 💀

    even LinkedIn employees don’t use LinkedIn for outreach 💀

  3. X

    always a good sign when two customers request the exact same feature at the same time instant validation

    always a good sign when two customers request the exact same feature at the same time instant validation

  4. X

    markdown preview in @conductor_build is really beautiful

    markdown preview in @conductor_build is really beautiful